What is the function of motor neurones?

What is the function of motor neurones?

• A. Transmit impulses from receptor to CNS
• B. Transmit impulses from the CNS to the effector
• C. Carry impulses within the brain
• D. Detect stimuli

Answer: (B)

Motor neurones carry impulses from the central nervous system to effectors such as muscles or glands, triggering a response. They are the pathways that take signals away from the brain or spinal cord to produce action, which is why they’re described as efferent neurones. This contrasts with sensory neurones, which bring information from receptors toward the CNS, and with interneurons that mainly connect neurons within the CNS. For example, in a reflex, receptors detect a stimulus, a sensory neurone carries that message to the spinal cord, and a motor neurone sends the command from the CNS to a muscle to contract and move.

Motor neurones carry impulses from the central nervous system to effectors such as muscles or glands, triggering a response. They are the pathways that take signals away from the brain or spinal cord to produce action, which is why they’re described as efferent neurones. This contrasts with sensory neurones, which bring information from receptors toward the CNS, and with interneurons that mainly connect neurons within the CNS. For example, in a reflex, receptors detect a stimulus, a sensory neurone carries that message to the spinal cord, and a motor neurone sends the command from the CNS to a muscle to contract and move.